Sony capped off the first night of E3 with its press conference, showing off the PS4 console hardware to the public for the first time and showcasing more games than its February reveal event. But if you've been following today's announcements, you know these details already. The PlayStation 4 will launch this holiday season for $400 in the US. It will not require an online connection for single-player games, nor periodic online check-ins. It will play used-games and allow owners to sell and trade discs as they have been able to do with this generation of consoles. Current PS Plus memberships will carry over to the PS4, and will be required for online multiplayer. Retailers have launched pre-order pages, with expected shipping dates conservatively set around December 31st.